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org.apache.commons.beanutils
Class ContextClassLoaderLocal  

java.lang.Object
  org.apache.commons.beanutils.ContextClassLoaderLocal

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public class ContextClassLoaderLocal

extends java.lang.Object

A value that is provided per (thread) context classloader. Patterned after ThreadLocal. There is a separate value used when Thread.getContextClassLoader() is null. This mechanism provides isolation for web apps deployed in the same container. Note: A WeakHashMap bug in several 1.3 JVMs results in a memory leak for those JVMs.

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Field Summary
private  java.lang.Object	globalValue
private  boolean	globalValueInitialized
private  java.util.Map	valueByClassLoader

 

Constructor Summary

ContextClassLoaderLocal()

 

Method Summary
java.lang.Object	get()           Gets the instance which provides the functionality for BeanUtils.
protected  java.lang.Object	initialValue()           Returns the initial value for this ContextClassLoaderLocal variable.
void	set(java.lang.Object value)           Sets the value - a value is provided per (thread) context classloader.
void	unset()           Unsets the value associated with the current thread's context classloader
void	unset(java.lang.ClassLoader classLoader)           Unsets the value associated with the given classloader

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

valueByClassLoader

private java.util.Map valueByClassLoader

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globalValueInitialized

private boolean globalValueInitialized

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globalValue

private java.lang.Object globalValue

Constructor Detail

ContextClassLoaderLocal

public ContextClassLoaderLocal()

Method Detail

initialValue

protected java.lang.Object initialValue()

Returns the initial value for this ContextClassLoaderLocal variable. This method will be called once per Context ClassLoader for each ContextClassLoaderLocal, the first time it is accessed with get or set. If the programmer desires ContextClassLoaderLocal variables to be initialized to some value other than null, ContextClassLoaderLocal must be subclassed, and this method overridden. Typically, an anonymous inner class will be used. Typical implementations of initialValue will call an appropriate constructor and return the newly constructed object.

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get

public java.lang.Object get()

Gets the instance which provides the functionality for BeanUtils. This is a pseudo-singleton - an single instance is provided per (thread) context classloader. This mechanism provides isolation for web apps deployed in the same container.

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set

public void set(java.lang.Object value)

Sets the value - a value is provided per (thread) context classloader. This mechanism provides isolation for web apps deployed in the same container.

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unset

public void unset()

Unsets the value associated with the current thread's context classloader

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unset

public void unset(java.lang.ClassLoader classLoader)

Unsets the value associated with the given classloader

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